Toothbrush



FIG. 1 is a top perspective view of a toothbrush, showing our new design;

FIG. 2 is an enlarged rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view of the toothbrush shown in FIG. 1;

FIG. 5 is a left side elevational view thereof, the right side being identical; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a toothbrush, as shown and described. 